简介:Objective:Toclone,sequenceandexpresstheprimateβ-chemokineRANTESgenes,hRANTESfromH.sapiensandmRANTESfromM.Mulatta,inordertoexplorethepossibilityofAIDSgenetherapy.Methods:hRANTESandmRANTESwereamplifiedbyreversetranscription-polymerasechainreaction(RT-PCR)fromRNAsextractedfromphytoagglutinin(PHA)-activatedperipheralbloodlymphocytes,hRANTESwascloned,sequencedandexpressedinvitro,andmRANTESwasdirectlysequencedforhomologycomparison.Results:Anexpected276bpfragmentwasobtainedinbothamplifications,andsequencedatademonstratedarelativelyhighhomologyamongdifferentcopiesofhRANTES(97%),andhRANTESwasupto95.6%homologoustomRANTES.WhencomparedwithRANTESfromothermammals,hRANTESgaverisetoahomologyrangingfrom77%to86%.TheclonedhRANTESwasexpressedinvitroandapositivesignalofRANTESwasdetectedbydotblotting.Conclusion:Thefull-lengthofhRANTESsequencewassubmittedtoGenBankandhadbeenreleased.OurmRANTESsequenceisfirstreportedandnotyetappearedinGenBank.ThesuccessfulcloningandexpressionofhRANTESwillprovideabasisforAIDSgenetherapyinthefuture.
简介:目的探讨白细胞趋化因子RANTES和Fractalkine与下肢静脉性溃疡发病的相关性。方法采用RTPCR方法检测下肢静脉溃疡患者(溃疡组,20例)、单纯下肢静脉功能不全患者(无溃疡组,20例)和健康人(对照组,10例)下肢外周血RANTESmRNA和FractalkinemRNA的表达。结果溃疡组血液RANTESmRNA和FractalkinemRNA的表达与无溃疡组和对照组相比,差异有统计学意义(P<0.05);无溃疡组血液RANTESmRNA的表达和对照组相比,差异有统计学意义(P<0.05);无溃疡组血液FractalkinemRNA的表达和对照组相比无显著差异(P>0.05)。结论静脉血RANTES的高表达可能是下肢静脉性功能不全的发病因素之一,而RANTESmRNA和FractalkinemRNA的高表达可能是导致下肢静脉性溃疡的重要因素。
简介:摘要目的通过研究蜱传脑炎病毒(tick-borne encephalitis virus, TBEV)感染小鼠引起神经退行性疾病探讨中枢神经系统可能存在的致病机制。方法小鼠颅内接种TBEV,8 d后处死取脑组织,HE染色观察脑组织病变以验证造模成功;免疫组化检测小鼠脑组织内神经元细胞核(neuronal nuclei, NeuN)、胶质纤维酸性蛋白(glial fibrillary acidic protein, GFAP)、增殖细胞核抗原(proliferating cell nuclear antigen, PCNA)和调节激活正常T细胞表达和分泌因子(reduced upon activation, normal T cell expressed and secreted, RANTES)的表达,统计阳性细胞数量或分析灰度值计算评分;免疫荧光结合激光共聚焦观察NeuN、GFAP的阳性细胞分布和RANTES、PCNA的表达情况。结果TBEV感染后小鼠脑组织NeuN阳性细胞数减少,GFAP阳性细胞数增加,星形胶质细胞增殖多于神经元,且RANTES主要由星形胶质细胞产生。结论TBEV感染会引起脑组织的神经毒性反应,导致神经细胞死亡,星形胶质细胞活化并产生大量趋化因子RANTES。
简介:AbstractBackground:Regulated upon activation, normal T-cell expressed, and secreted (RANTES) is a chemokine actively involved in the initiation and progression of atherosclerosis (AS), which is the major cause of ischemic cerebrovascular disease (ICVD). This study aimed to determine the associations between circulating RANTES level and overall AS conditions of cardiac and cerebral vessel beds in patients with ICVD.Methods:Patients with ICVD admitted to the department of neurology of Xuanwu Hospital from April 1, 2019 to June 30, 2019 were prospectively enrolled in the study. Plasma RANTES level was measured by enzyme-linked immunosorbent assay to represent the circulating RANTES level. The integrated AS burden of the cervicocephalic and coronary arteries was examined using computed tomography angiography and reflected by "cardio-cerebral AS burden (CCAB)" as a continuous variable. Then, the relationship of plasma RANTES level and CCAB in patients with ICVD was analyzed by correlation analyses and general linear models.Results:A total of 40 patients with ICVD were included in the study. There was a significant positive correlation between CCAB and plasma RANTES level in ICVD (r = 0.786, P < 0.001), independent of age, sex, acute or chronic phase of ICVD, and mono or dual antiplatelet therapy (adjusted B for ln RANTES, 12.063; 95% confidence interval, 7.572-16.533). The association of plasma RANTES level with AS conditions (burden, severity, and extent) in single cardiac or cerebral vessel bed was similar to that with CCAB, but the correlation coefficient for CCAB was higher (increment ranged from 0.126 to 0.397).Conclusions:Plasma RANTES level was an independent indicator for the integrated AS burden of the cervicocephalic and coronary arteries in ICVD. Comprehensive evaluation of AS conditions using the novel continuous index CCAB might be important in revealing the systematic relationship between circulating RANTES and AS in patients with ICVD.
简介:摘要目的研究肺癌患者氧化应激水平和血清趋化因子γ-干扰素诱导蛋白10(IP-10)、T细胞表达分泌的活化调节因子(Rantes)含量的改变,探讨氧化损伤和趋化因子在肺癌发病机制中的作用及相互关系。方法收集2018年2月至2019年2月东营市东营区人民医院住院的52例肺癌患者为肺癌组,34例慢性支气管炎患者为配比组,20名健康者为健康对照组,采用黄嘌呤氧化酶法测定血清超氧化物歧化酶(SOD)活性,硫代巴比妥酸比色法测定丙二醛(MDA)含量,酶联免疫吸附法检测血清趋化因子IP-10及Rantes表达水平,并进行相关性分析。结果肺癌组SOD活性低于配比组和健康对照组(F=29.681,P<0.05)。肺癌组MDA含量高于配比组和健康对照组(F=61.151,P<0.05)。肺癌Ⅰ~Ⅳ期患者血清SOD活性依次降低,差异有统计学意义(F=11.734,P<0.05)。肺癌组血清IP-10及Rantes水平高于配比组和健康对照组(F=22.115、13.181,P<0.05)。SOD活性与IP-10及Rantes水平呈负相关性(r=-0.309、-0.376,P=0.017、0.034),MDA含量与IP-10水平呈正相关性(r=0.357,P=0.021)。结论氧化应激和趋化因子相互作用,可能在肺癌的发生、发展机制中发挥了重要作用。